Mineral specimens search results

Transparent Quartz crystal with a very sharp phantom, its back side partially coated by Dolomite and by Cassiterite microcrystals, with Arsenopyrite and a group of very sharp and bright Chalcopyrite crystals. From the Jan Buma collection, and a rarity for Yaogangxian in that there is no Fluorite on the specimen!
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province China
Specimen size: 6.1 × 3.1 × 3.1 cm = 2.4” × 1.2” × 1.2”Price:
[SOLD]

On an ophitic rock matrix, a group of Quartz crystals showing an equidimensional shape, some of them with cubic shape, due to the minor development of prism faces. Precise analysis showed that their deep blue color is due to fibrous inclusions of Magnesioriebeckite.The specimen has been reviewed and published in the magazine ‘Lapis’ on page 50, volume 37, number 6, June 2012
Acedo Claim (Juanona Quarry), Juanona, Antequera, Comarca de Antequera, Málaga, Andalusia Spain (2000)
Specimen size: 7.3 × 5.1 × 2.2 cm = 2.9” × 2.0” × 0.9”Price:
[SOLD]

A splendid specimen. The crystals, even though not being very tall, are very clear and bright, with well-defined faces and edges, doubly-terminated and with some hydrocarbon inclusions and they airily sit on a very esthetic matrix.This specimen was photographed for the ‘Über Diamanten und Hyazinthen’ section of the magazine ‘Mineralien Welt’ on page 56 of number 5/2012 and in the magazine "Lapis" on page 20 of number 7-8 / 2013
Berbes mining area, Berbes, Ribadesella, Comarca Oriente, Asturias Spain
Specimen size: 7.6 × 6.4 × 4.8 cm = 3.0” × 2.5” × 1.9”

Group of doubly terminated Quartz crystals, one of them clearly dominant, with excellent transparency and good brilliance. The crystal that serves as a base seems broken but is undamaged, with curious face growths.The piece is accompanied by a handwritten label from the Folch collection.
Voralp Valley, Uri Switzerland
Specimen size: 7.1 × 4 × 2 cm = 2.8” × 1.6” × 0.8”

Two very bright and well defined doubly terminated crystals with abundant inclusions and with Baryte. The secondary crystal is slightly flattened by an overgrowth of two opposite faces of one of the terminal rhombohedrons. The sample is from a recent find of a big geode in the locality. Unfortunately only a few specimens were saved and complete. The Emilio mine is very well known for colorless Fluorite crystals but Quartz is very uncommon there.This specimen was photographed for the ‘Sainte-Marie Show 2009’ section of the magazine ‘Minéraux et Fossiles’ and appears on page 17 of number 383.
Emilio Mine, "Coquera Norte", North area, Obdulia vein, Caravia mining area, La Rubiera, Loroñe, Colunga, Comarca de la Sidra, Asturias Spain (03/2009)
Specimen size: 8.9 × 6.5 × 5.7 cm = 3.5” × 2.6” × 2.2”Price:
[SOLD]

The crystal is doubly terminated and has the short prism typical of the locality. It is transparent and bright and has attractive inclusions of hydrocarbons and the beginning of “windows” on some of its terminal faces. We call attention on the position of the crystal on the matrix that enhances the esthetics of the specimen as well as increases its value because specimens of Quartz with matrix are pretty unusual in Berbes.This specimen was photographed and published in the magazine "Lapis" number 7-8 / 2013, page 23
Berbes mining area, Berbes, Ribadesella, Comarca Oriente, Asturias Spain (±1997)
Specimen size: 5.3 × 3.9 × 4 cm = 2.1” × 1.5” × 1.6”Price:
[SOLD]

Floater and complete crystal with two very different terminations. One of them has simple forms and it is completely coated by chlorite, while the opposite is free of coatings and shows a parallel polycrystalline growth.
Sedrun, Tavetsch, Vorderrhein Valley, Grisons Switzerland (±1980)
Specimen size: 11.2 × 5.5 × 4.5 cm = 4.4” × 2.2” × 1.8”Price:
[SOLD]